II - DCE FEL ČVUT v Praze

SIMATIC S7 Ex Analog Modules
3.7 Analog Input Module SM 331; AI 8 x TC/4 x RTD
Order number
Features
Resolution
3-54
6ES7 331-7SF00-0AB0
The analog input module SM 331; AI 8 x TC/4 x RTD
is characterized by the following features:
8 inputs in 4 channel groups
Measured value resolution; adjustable per channel group (depending on
set interference frequency rejection)
– 9 Bit + sign (integration time 2.5 ms) 400 Hz
– 12 Bit + sign (integration time 162 /3 / 20 ms) 60/50 Hz
– 15 Bit + sign (integration time 100 ms) 10 Hz
measurement mode selectable per channel group:
– Voltage
– Resistance
– Temperature
Arbitrary measuring range selection per channel group
Configurable diagnostics
Configurable diagnostic interrupt
2 channels with limit monitoring
Configurable limit interrupt
Isolated with respect to CPU
Common mode 60 V between channels
The resolution of a measured value depends directly on the selected
integration time, i.e. the longer the integration time for an analog input
channel, the more accurate the resolution of the measured value (refer to
technical specifications of the analog input module and Table 3-2).
I/O Modules with Intrinsically-Safe Signals
C79000-G7076-C152-04